After Rafa's comment on my last post, I trawled the web for images of French Napoleonic shako evolution and this one was the one that caught my eye. It shows, pre-Bardin elite shakos with coloured tape around the top and bottom.
This image (above) from the sister website of the first indicates that red tape was worn around the top and bottom of shakos pre-1812, but isn't conclusive about voltiguers' headgear.
The image above shows a voltiguer in pre-1812 regulation uniform with yellow bands on his shako under green cords.
I reckon that's conclusive enough evidence for me! What I'll do is get rid of the chevrons which, as Rafa pointed out, are indicative of the Bardin uniform changes, and go for the bands around the top and bottom of the shako as indicated in the images above.
On another tack, I'm a winner! I've managed to score the above book from the generous Burkhard at
dhcwargamesblog in his blog-birthday sweep. I've heard lots about this controversial book, but haven't got around to finding a copy, so here's my chance.